.top{
    width:100%;
    height:7rem;
    background: #b3e5fc;
    font-size:3rem;
    text-align: center;
    line-height: 7rem;
}
.aui-toast{
    height:2rem;
    line-height: 4rem;
    width:10rem;
    position:absolute;
    left:50%;
    top:65%;
    margin-left:-5rem;
}